diff options
Diffstat (limited to 'mozilla/nsprpub/pr/src/md/windows/w95io.c')
| -rw-r--r-- | mozilla/nsprpub/pr/src/md/windows/w95io.c | 1786 |
1 files changed, 1786 insertions, 0 deletions
diff --git a/mozilla/nsprpub/pr/src/md/windows/w95io.c b/mozilla/nsprpub/pr/src/md/windows/w95io.c new file mode 100644 index 0000000..86f952a --- /dev/null +++ b/mozilla/nsprpub/pr/src/md/windows/w95io.c @@ -0,0 +1,1786 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is the Netscape Portable Runtime (NSPR). + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998-2000 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Masayuki Nakano <masayuki@d-toybox.com> + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +/* Windows 95 IO module + * + * Assumes synchronous I/O. + * + */ + +#include "primpl.h" +#include <direct.h> +#include <mbstring.h> +#ifdef MOZ_UNICODE +#include <wchar.h> +#endif /* MOZ_UNICODE */ + +#ifdef WINCE + +static HANDLE CreateFileA(LPCSTR lpFileName, + DWORD dwDesiredAccess, + DWORD dwShareMode, + LPSECURITY_ATTRIBUTES lpSecurityAttributes, + DWORD dwCreationDisposition, + DWORD dwFlagsAndAttributes, + HANDLE hTemplateFile) +{ + PRUnichar wFileName[MAX_PATH]; + MultiByteToWideChar(CP_ACP, 0, lpFileName, -1, wFileName, MAX_PATH); + return CreateFileW(wFileName, dwDesiredAccess, dwShareMode, + lpSecurityAttributes, dwCreationDisposition, + dwFlagsAndAttributes, hTemplateFile); +} + +/* + * We seem to call FindFirstFileA and FindNextFileA just to get + * the file names in a directory listing. If so, we could define + * a custom WIN32_FIND_DATAA structure with just the cFileName + * member, and the CopyFindFileDataW2A function could just + * copy/convert the cFileName member. + */ +static void CopyFindFileDataW2A(LPWIN32_FIND_DATAW from, + LPWIN32_FIND_DATAA to) +{ + /* + * WIN32_FIND_DATAA and WIN32_FIND_DATAW are slightly different. + * The dwReserved0, dwReserved1, and cAlternateFileName members + * exist only in WIN32_FIND_DATAA. The dwOID member exists only + * in WIN32_FIND_DATAW. + */ + to->dwFileAttributes = from->dwFileAttributes; + to->ftCreationTime = from->ftCreationTime; + to->ftLastAccessTime = from->ftLastAccessTime; + to->ftLastWriteTime = from->ftLastWriteTime; + to->nFileSizeHigh = from->nFileSizeHigh; + to->nFileSizeLow = from->nFileSizeLow; + to->dwReserved0 = 0; + to->dwReserved1 = 0; + WideCharToMultiByte(CP_ACP, 0, from->cFileName, -1, + to->cFileName, MAX_PATH, NULL, NULL); + to->cAlternateFileName[0] = '\0'; +} + +static HANDLE FindFirstFileA(LPCSTR lpFileName, + LPWIN32_FIND_DATAA lpFindFileData) +{ + PRUnichar wFileName[MAX_PATH]; + HANDLE hFindFile; + WIN32_FIND_DATAW wFindFileData; + + MultiByteToWideChar(CP_ACP, 0, lpFileName, -1, wFileName, MAX_PATH); + hFindFile = FindFirstFileW(wFileName, &wFindFileData); + if (hFindFile != INVALID_HANDLE_VALUE) { + CopyFindFileDataW2A(&wFindFileData, lpFindFileData); + } + return hFindFile; +} + +static BOOL FindNextFileA(HANDLE hFindFile, + LPWIN32_FIND_DATAA lpFindFileData) +{ + WIN32_FIND_DATAW wFindFileData; + BOOL rv; + + rv = FindNextFileW(hFindFile, &wFindFileData); + if (rv) { + CopyFindFileDataW2A(&wFindFileData, lpFindFileData); + } + return rv; +} + +static BOOL GetFileAttributesExA(LPCSTR lpFileName, + GET_FILEEX_INFO_LEVELS fInfoLevelId, + LPVOID lpFileInformation) +{ + PRUnichar wFileName[MAX_PATH]; + MultiByteToWideChar(CP_ACP, 0, lpFileName, -1, wFileName, MAX_PATH); + return GetFileAttributesExW(wFileName, fInfoLevelId, lpFileInformation); +} + +static BOOL DeleteFileA(LPCSTR lpFileName) +{ + PRUnichar wFileName[MAX_PATH]; + MultiByteToWideChar(CP_ACP, 0, lpFileName, -1, wFileName, MAX_PATH); + return DeleteFileW(wFileName); +} + +static BOOL MoveFileA(LPCSTR from, LPCSTR to) +{ + PRUnichar wFrom[MAX_PATH]; + PRUnichar wTo[MAX_PATH]; + MultiByteToWideChar(CP_ACP, 0, from, -1, wFrom, MAX_PATH); + MultiByteToWideChar(CP_ACP, 0, to, -1, wTo, MAX_PATH); + return MoveFileW(wFrom, wTo); +} + +static BOOL CreateDirectoryA(LPCSTR lpPathName, + LPSECURITY_ATTRIBUTES lpSecurityAttributes) +{ + PRUnichar wPathName[MAX_PATH]; + MultiByteToWideChar(CP_ACP, 0, lpPathName, -1, wPathName, MAX_PATH); + return CreateDirectoryW(wPathName, lpSecurityAttributes); +} + +static BOOL RemoveDirectoryA(LPCSTR lpPathName) +{ + PRUnichar wPathName[MAX_PATH]; + MultiByteToWideChar(CP_ACP, 0, lpPathName, -1, wPathName, MAX_PATH); + return RemoveDirectoryW(wPathName); +} + +static long GetDriveType(const char *lpRootPathName) +{ + PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0); + return 0; // The drive type cannot be determined. +} + +static DWORD GetFullPathName(const char *lpFileName, + DWORD nBufferLength, + const char *lpBuffer, + const char **lpFilePart) +{ + // needs work dft + DWORD len = strlen(lpFileName); + if (len > nBufferLength) + return len; + + strncpy((char *)lpBuffer, lpFileName, len); + ((char *)lpBuffer)[len] = '\0'; + + if (lpFilePart) { + char *sep = strrchr(lpBuffer, '\\'); + if (sep) { + sep++; // pass the seperator + *lpFilePart = sep; + } else { + *lpFilePart = lpBuffer; + } + } + return len; +} + +static BOOL LockFile(HANDLE hFile, + DWORD dwFileOffsetLow, + DWORD dwFileOffsetHigh, + DWORD nNumberOfBytesToLockLow, + DWORD nNumberOfBytesToLockHigh) +{ + OVERLAPPED overlapped = {0}; + overlapped.Offset = dwFileOffsetLow; + overlapped.OffsetHigh = dwFileOffsetHigh; + return LockFileEx(hFile, + LOCKFILE_EXCLUSIVE_LOCK | LOCKFILE_FAIL_IMMEDIATELY, + 0, // reserved + nNumberOfBytesToLockLow, + nNumberOfBytesToLockHigh, &overlapped); +} + +static BOOL UnlockFile(HANDLE hFile, + DWORD dwFileOffsetLow, + DWORD dwFileOffsetHigh, + DWORD nNumberOfBytesToUnlockLow, + DWORD nNumberOfBytesToUnlockHigh) +{ + OVERLAPPED overlapped = {0}; + overlapped.Offset = dwFileOffsetLow; + overlapped.OffsetHigh = dwFileOffsetHigh; + return UnlockFileEx(hFile, + 0, // reserved + nNumberOfBytesToUnlockLow, + nNumberOfBytesToUnlockHigh, &overlapped); +} + +static unsigned char *_mbsdec(const unsigned char *string1, + const unsigned char *string2) +{ + // needs work dft + return NULL; +} + +static unsigned char *_mbsinc(const unsigned char *inCurrent) +{ + // needs work dft + return (unsigned char *)(inCurrent + 1); +} + +#endif + +struct _MDLock _pr_ioq_lock; + +/* + * NSPR-to-NT access right mapping table for files. + */ +static DWORD fileAccessTable[] = { + FILE_GENERIC_READ, + FILE_GENERIC_WRITE, + FILE_GENERIC_EXECUTE +}; + +/* + * NSPR-to-NT access right mapping table for directories. + */ +static DWORD dirAccessTable[] = { + FILE_GENERIC_READ, + FILE_GENERIC_WRITE|FILE_DELETE_CHILD, + FILE_GENERIC_EXECUTE +}; + +/* Windows CE has GetFileAttributesEx. */ +#ifndef WINCE +typedef BOOL (WINAPI *GetFileAttributesExFn)(LPCTSTR, + GET_FILEEX_INFO_LEVELS, + LPVOID); +static GetFileAttributesExFn getFileAttributesEx; +static void InitGetFileInfo(void); +#endif + +static void InitUnicodeSupport(void); + +static PRBool IsPrevCharSlash(const char *str, const char *current); + +void +_PR_MD_INIT_IO() +{ + WORD WSAVersion = 0x0101; + WSADATA WSAData; + int err; + + err = WSAStartup( WSAVersion, &WSAData ); + PR_ASSERT(0 == err); + +#ifdef DEBUG + /* Doublecheck _pr_filetime_offset's hard-coded value is correct. */ + { + SYSTEMTIME systime; + union { + PRTime prt; + FILETIME ft; + } filetime; + BOOL rv; + + systime.wYear = 1970; + systime.wMonth = 1; + /* wDayOfWeek is ignored */ + systime.wDay = 1; + systime.wHour = 0; + systime.wMinute = 0; + systime.wSecond = 0; + systime.wMilliseconds = 0; + + rv = SystemTimeToFileTime(&systime, &filetime.ft); + PR_ASSERT(0 != rv); + PR_ASSERT(filetime.prt == _pr_filetime_offset); + } +#endif /* DEBUG */ + + _PR_NT_InitSids(); + +#ifndef WINCE + InitGetFileInfo(); +#endif + + InitUnicodeSupport(); + + _PR_MD_InitSockets(); +} + +PRStatus +_PR_MD_WAIT(PRThread *thread, PRIntervalTime ticks) +{ + DWORD rv; + + PRUint32 msecs = (ticks == PR_INTERVAL_NO_TIMEOUT) ? + INFINITE : PR_IntervalToMilliseconds(ticks); + rv = WaitForSingleObject(thread->md.blocked_sema, msecs); + switch(rv) + { + case WAIT_OBJECT_0: + return PR_SUCCESS; + break; + case WAIT_TIMEOUT: + _PR_THREAD_LOCK(thread); + if (thread->state == _PR_IO_WAIT) { + ; + } else { + if (thread->wait.cvar != NULL) { + thread->wait.cvar = NULL; + _PR_THREAD_UNLOCK(thread); + } else { + /* The CVAR was notified just as the timeout + * occurred. This led to us being notified twice. + * call WaitForSingleObject() to clear the semaphore. + */ + _PR_THREAD_UNLOCK(thread); + rv = WaitForSingleObject(thread->md.blocked_sema, 0); + PR_ASSERT(rv == WAIT_OBJECT_0); + } + } + return PR_SUCCESS; + break; + default: + return PR_FAILURE; + break; + } +} +PRStatus +_PR_MD_WAKEUP_WAITER(PRThread *thread) +{ + if ( _PR_IS_NATIVE_THREAD(thread) ) + { + if (ReleaseSemaphore(thread->md.blocked_sema, 1, NULL) == FALSE) + return PR_FAILURE; + else + return PR_SUCCESS; + } +} + + +/* --- FILE IO ----------------------------------------------------------- */ +/* + * _PR_MD_OPEN() -- Open a file + * + * returns: a fileHandle + * + * The NSPR open flags (osflags) are translated into flags for Win95 + * + * Mode seems to be passed in as a unix style file permissions argument + * as in 0666, in the case of opening the logFile. + * + */ +PROsfd +_PR_MD_OPEN(const char *name, PRIntn osflags, int mode) +{ + HANDLE file; + PRInt32 access = 0; + PRInt32 flags = 0; + PRInt32 flag6 = 0; + + if (osflags & PR_SYNC) flag6 = FILE_FLAG_WRITE_THROUGH; + + if (osflags & PR_RDONLY || osflags & PR_RDWR) + access |= GENERIC_READ; + if (osflags & PR_WRONLY || osflags & PR_RDWR) + access |= GENERIC_WRITE; + + if ( osflags & PR_CREATE_FILE && osflags & PR_EXCL ) + flags = CREATE_NEW; + else if (osflags & PR_CREATE_FILE) { + if (osflags & PR_TRUNCATE) + flags = CREATE_ALWAYS; + else + flags = OPEN_ALWAYS; + } else { + if (osflags & PR_TRUNCATE) + flags = TRUNCATE_EXISTING; + else + flags = OPEN_EXISTING; + } + + file = CreateFileA(name, + access, + FILE_SHARE_READ|FILE_SHARE_WRITE, + NULL, + flags, + flag6, + NULL); + if (file == INVALID_HANDLE_VALUE) { + _PR_MD_MAP_OPEN_ERROR(GetLastError()); + return -1; + } + + return (PROsfd)file; +} + +PROsfd +_PR_MD_OPEN_FILE(const char *name, PRIntn osflags, int mode) +{ + HANDLE file; + PRInt32 access = 0; + PRInt32 flags = 0; + PRInt32 flag6 = 0; + SECURITY_ATTRIBUTES sa; + LPSECURITY_ATTRIBUTES lpSA = NULL; + PSECURITY_DESCRIPTOR pSD = NULL; + PACL pACL = NULL; + + if (osflags & PR_CREATE_FILE) { + if (_PR_NT_MakeSecurityDescriptorACL(mode, fileAccessTable, + &pSD, &pACL) == PR_SUCCESS) { + sa.nLength = sizeof(sa); + sa.lpSecurityDescriptor = pSD; + sa.bInheritHandle = FALSE; + lpSA = &sa; + } + } + + if (osflags & PR_SYNC) flag6 = FILE_FLAG_WRITE_THROUGH; + + if (osflags & PR_RDONLY || osflags & PR_RDWR) + access |= GENERIC_READ; + if (osflags & PR_WRONLY || osflags & PR_RDWR) + access |= GENERIC_WRITE; + + if ( osflags & PR_CREATE_FILE && osflags & PR_EXCL ) + flags = CREATE_NEW; + else if (osflags & PR_CREATE_FILE) { + if (osflags & PR_TRUNCATE) + flags = CREATE_ALWAYS; + else + flags = OPEN_ALWAYS; + } else { + if (osflags & PR_TRUNCATE) + flags = TRUNCATE_EXISTING; + else + flags = OPEN_EXISTING; + } + + file = CreateFileA(name, + access, + FILE_SHARE_READ|FILE_SHARE_WRITE, + lpSA, + flags, + flag6, + NULL); + if (lpSA != NULL) { + _PR_NT_FreeSecurityDescriptorACL(pSD, pACL); + } + if (file == INVALID_HANDLE_VALUE) { + _PR_MD_MAP_OPEN_ERROR(GetLastError()); + return -1; + } + + return (PROsfd)file; +} + +PRInt32 +_PR_MD_READ(PRFileDesc *fd, void *buf, PRInt32 len) +{ + PRUint32 bytes; + int rv, err; + + rv = ReadFile((HANDLE)fd->secret->md.osfd, + (LPVOID)buf, + len, + &bytes, + NULL); + + if (rv == 0) + { + err = GetLastError(); + /* ERROR_HANDLE_EOF can only be returned by async io */ + PR_ASSERT(err != ERROR_HANDLE_EOF); + if (err == ERROR_BROKEN_PIPE) + return 0; + else { + _PR_MD_MAP_READ_ERROR(err); + return -1; + } + } + return bytes; +} + +PRInt32 +_PR_MD_WRITE(PRFileDesc *fd, const void *buf, PRInt32 len) +{ + PROsfd f = fd->secret->md.osfd; + PRInt32 bytes; + int rv; + + rv = WriteFile((HANDLE)f, + buf, + len, + &bytes, + NULL ); + + if (rv == 0) + { + _PR_MD_MAP_WRITE_ERROR(GetLastError()); + return -1; + } + return bytes; +} /* --- end _PR_MD_WRITE() --- */ + +PROffset32 +_PR_MD_LSEEK(PRFileDesc *fd, PROffset32 offset, PRSeekWhence whence) +{ + DWORD moveMethod; + PROffset32 rv; + + switch (whence) { + case PR_SEEK_SET: + moveMethod = FILE_BEGIN; + break; + case PR_SEEK_CUR: + moveMethod = FILE_CURRENT; + break; + case PR_SEEK_END: + moveMethod = FILE_END; + break; + default: + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + return -1; + } + + rv = SetFilePointer((HANDLE)fd->secret->md.osfd, offset, NULL, moveMethod); + + /* + * If the lpDistanceToMoveHigh argument (third argument) is + * NULL, SetFilePointer returns 0xffffffff on failure. + */ + if (-1 == rv) { + _PR_MD_MAP_LSEEK_ERROR(GetLastError()); + } + return rv; +} + +PROffset64 +_PR_MD_LSEEK64(PRFileDesc *fd, PROffset64 offset, PRSeekWhence whence) +{ + DWORD moveMethod; + LARGE_INTEGER li; + DWORD err; + + switch (whence) { + case PR_SEEK_SET: + moveMethod = FILE_BEGIN; + break; + case PR_SEEK_CUR: + moveMethod = FILE_CURRENT; + break; + case PR_SEEK_END: + moveMethod = FILE_END; + break; + default: + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + return -1; + } + + li.QuadPart = offset; + li.LowPart = SetFilePointer((HANDLE)fd->secret->md.osfd, + li.LowPart, &li.HighPart, moveMethod); + + if (0xffffffff == li.LowPart && (err = GetLastError()) != NO_ERROR) { + _PR_MD_MAP_LSEEK_ERROR(err); + li.QuadPart = -1; + } + return li.QuadPart; +} + +/* + * This is documented to succeed on read-only files, but Win32's + * FlushFileBuffers functions fails with "access denied" in such a + * case. So we only signal an error if the error is *not* "access + * denied". + */ +PRInt32 +_PR_MD_FSYNC(PRFileDesc *fd) +{ + /* + * From the documentation: + * + * On Windows NT, the function FlushFileBuffers fails if hFile + * is a handle to console output. That is because console + * output is not buffered. The function returns FALSE, and + * GetLastError returns ERROR_INVALID_HANDLE. + * + * On the other hand, on Win95, it returns without error. I cannot + * assume that 0, 1, and 2 are console, because if someone closes + * System.out and then opens a file, they might get file descriptor + * 1. An error on *that* version of 1 should be reported, whereas + * an error on System.out (which was the original 1) should be + * ignored. So I use isatty() to ensure that such an error was due + * to this bogosity, and if it was, I ignore the error. + */ + + BOOL ok = FlushFileBuffers((HANDLE)fd->secret->md.osfd); + + if (!ok) { + DWORD err = GetLastError(); + if (err != ERROR_ACCESS_DENIED) { // from winerror.h + _PR_MD_MAP_FSYNC_ERROR(err); + return -1; + } + } + return 0; +} + +PRInt32 +_MD_CloseFile(PROsfd osfd) +{ + PRInt32 rv; + + rv = (CloseHandle((HANDLE)osfd))?0:-1; + if (rv == -1) + _PR_MD_MAP_CLOSE_ERROR(GetLastError()); + return rv; +} + + +/* --- DIR IO ------------------------------------------------------------ */ +#define GetFileFromDIR(d) (d)->d_entry.cFileName +#define FileIsHidden(d) ((d)->d_entry.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) + +static void FlipSlashes(char *cp, size_t len) +{ + while (len-- > 0) { + if (cp[0] == '/') { + cp[0] = PR_DIRECTORY_SEPARATOR; + } + cp = _mbsinc(cp); + } +} /* end FlipSlashes() */ + + +/* +** +** Local implementations of standard Unix RTL functions which are not provided +** by the VC RTL. +** +*/ + +PRInt32 +_PR_MD_CLOSE_DIR(_MDDir *d) +{ + if ( d ) { + if (FindClose(d->d_hdl)) { + d->magic = (PRUint32)-1; + return 0; + } else { + _PR_MD_MAP_CLOSEDIR_ERROR(GetLastError()); + return -1; + } + } + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + return -1; +} + + +PRStatus +_PR_MD_OPEN_DIR(_MDDir *d, const char *name) +{ + char filename[ MAX_PATH ]; + size_t len; + + len = strlen(name); + /* Need 5 bytes for \*.* and the trailing null byte. */ + if (len + 5 > MAX_PATH) { + PR_SetError(PR_NAME_TOO_LONG_ERROR, 0); + return PR_FAILURE; + } + strcpy(filename, name); + + /* + * If 'name' ends in a slash or backslash, do not append + * another backslash. + */ + if (IsPrevCharSlash(filename, filename + len)) { + len--; + } + strcpy(&filename[len], "\\*.*"); + FlipSlashes( filename, strlen(filename) ); + + d->d_hdl = FindFirstFileA( filename, &(d->d_entry) ); + if ( d->d_hdl == INVALID_HANDLE_VALUE ) { + _PR_MD_MAP_OPENDIR_ERROR(GetLastError()); + return PR_FAILURE; + } + d->firstEntry = PR_TRUE; + d->magic = _MD_MAGIC_DIR; + return PR_SUCCESS; +} + +char * +_PR_MD_READ_DIR(_MDDir *d, PRIntn flags) +{ + PRInt32 err; + BOOL rv; + char *fileName; + + if ( d ) { + while (1) { + if (d->firstEntry) { + d->firstEntry = PR_FALSE; + rv = 1; + } else { + rv = FindNextFileA(d->d_hdl, &(d->d_entry)); + } + if (rv == 0) { + break; + } + fileName = GetFileFromDIR(d); + if ( (flags & PR_SKIP_DOT) && + (fileName[0] == '.') && (fileName[1] == '\0')) + continue; + if ( (flags & PR_SKIP_DOT_DOT) && + (fileName[0] == '.') && (fileName[1] == '.') && + (fileName[2] == '\0')) + continue; + if ( (flags & PR_SKIP_HIDDEN) && FileIsHidden(d)) + continue; + return fileName; + } + err = GetLastError(); + PR_ASSERT(NO_ERROR != err); + _PR_MD_MAP_READDIR_ERROR(err); + return NULL; + } + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + return NULL; +} + +PRInt32 +_PR_MD_DELETE(const char *name) +{ + if (DeleteFileA(name)) { + return 0; + } else { + _PR_MD_MAP_DELETE_ERROR(GetLastError()); + return -1; + } +} + +void +_PR_FileTimeToPRTime(const FILETIME *filetime, PRTime *prtm) +{ + PR_ASSERT(sizeof(FILETIME) == sizeof(PRTime)); + CopyMemory(prtm, filetime, sizeof(PRTime)); +#if defined(__MINGW32__) + *prtm = (*prtm - _pr_filetime_offset) / 10LL; +#else + *prtm = (*prtm - _pr_filetime_offset) / 10i64; +#endif + +#ifdef DEBUG + /* Doublecheck our calculation. */ + { + SYSTEMTIME systime; + PRExplodedTime etm; + PRTime cmp; /* for comparison */ + BOOL rv; + + rv = FileTimeToSystemTime(filetime, &systime); + PR_ASSERT(0 != rv); + + /* + * PR_ImplodeTime ignores wday and yday. + */ + etm.tm_usec = systime.wMilliseconds * PR_USEC_PER_MSEC; + etm.tm_sec = systime.wSecond; + etm.tm_min = systime.wMinute; + etm.tm_hour = systime.wHour; + etm.tm_mday = systime.wDay; + etm.tm_month = systime.wMonth - 1; + etm.tm_year = systime.wYear; + /* + * It is not well-documented what time zone the FILETIME's + * are in. WIN32_FIND_DATA is documented to be in UTC (GMT). + * But BY_HANDLE_FILE_INFORMATION is unclear about this. + * By our best judgement, we assume that FILETIME is in UTC. + */ + etm.tm_params.tp_gmt_offset = 0; + etm.tm_params.tp_dst_offset = 0; + cmp = PR_ImplodeTime(&etm); + + /* + * SYSTEMTIME is in milliseconds precision, so we convert PRTime's + * microseconds to milliseconds before doing the comparison. + */ + PR_ASSERT((cmp / PR_USEC_PER_MSEC) == (*prtm / PR_USEC_PER_MSEC)); + } +#endif /* DEBUG */ +} + +PRInt32 +_PR_MD_STAT(const char *fn, struct stat *info) +{ +#ifdef WINCE + // needs work. dft + PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0); + return -1; +#else + PRInt32 rv; + + rv = _stat(fn, (struct _stat *)info); + if (-1 == rv) { + /* + * Check for MSVC runtime library _stat() bug. + * (It's really a bug in FindFirstFile().) + * If a pathname ends in a backslash or slash, + * e.g., c:\temp\ or c:/temp/, _stat() will fail. + * Note: a pathname ending in a slash (e.g., c:/temp/) + * can be handled by _stat() on NT but not on Win95. + * + * We remove the backslash or slash at the end and + * try again. + */ + + size_t len = strlen(fn); + if (len > 0 && len <= _MAX_PATH + && IsPrevCharSlash(fn, fn + len)) { + char newfn[_MAX_PATH + 1]; + + strcpy(newfn, fn); + newfn[len - 1] = '\0'; + rv = _stat(newfn, (struct _stat *)info); + } + } + + if (-1 == rv) { + _PR_MD_MAP_STAT_ERROR(errno); + } + return rv; +#endif +} + +#define _PR_IS_SLASH(ch) ((ch) == '/' || (ch) == '\\') + +static PRBool +IsPrevCharSlash(const char *str, const char *current) +{ + const char *prev; + + if (str >= current) + return PR_FALSE; + prev = _mbsdec(str, current); + return (prev == current - 1) && _PR_IS_SLASH(*prev); +} + +/* + * IsRootDirectory -- + * + * Return PR_TRUE if the pathname 'fn' is a valid root directory, + * else return PR_FALSE. The char buffer pointed to by 'fn' must + * be writable. During the execution of this function, the contents + * of the buffer pointed to by 'fn' may be modified, but on return + * the original contents will be restored. 'buflen' is the size of + * the buffer pointed to by 'fn'. + * + * Root directories come in three formats: + * 1. / or \, meaning the root directory of the current drive. + * 2. C:/ or C:\, where C is a drive letter. + * 3. \\<server name>\<share point name>\ or + * \\<server name>\<share point name>, meaning the root directory + * of a UNC (Universal Naming Convention) name. + */ + +static PRBool +IsRootDirectory(char *fn, size_t buflen) +{ + char *p; + PRBool slashAdded = PR_FALSE; + PRBool rv = PR_FALSE; + + if (_PR_IS_SLASH(fn[0]) && fn[1] == '\0') { + return PR_TRUE; + } + + if (isalpha(fn[0]) && fn[1] == ':' && _PR_IS_SLASH(fn[2]) + && fn[3] == '\0') { + rv = GetDriveType(fn) > 1 ? PR_TRUE : PR_FALSE; + return rv; + } + + /* The UNC root directory */ + + if (_PR_IS_SLASH(fn[0]) && _PR_IS_SLASH(fn[1])) { + /* The 'server' part should have at least one character. */ + p = &fn[2]; + if (*p == '\0' || _PR_IS_SLASH(*p)) { + return PR_FALSE; + } + + /* look for the next slash */ + do { + p = _mbsinc(p); + } while (*p != '\0' && !_PR_IS_SLASH(*p)); + if (*p == '\0') { + return PR_FALSE; + } + + /* The 'share' part should have at least one character. */ + p++; + if (*p == '\0' || _PR_IS_SLASH(*p)) { + return PR_FALSE; + } + + /* look for the final slash */ + do { + p = _mbsinc(p); + } while (*p != '\0' && !_PR_IS_SLASH(*p)); + if (_PR_IS_SLASH(*p) && p[1] != '\0') { + return PR_FALSE; + } + if (*p == '\0') { + /* + * GetDriveType() doesn't work correctly if the + * path is of the form \\server\share, so we add + * a final slash temporarily. + */ + if ((p + 1) < (fn + buflen)) { + *p++ = '\\'; + *p = '\0'; + slashAdded = PR_TRUE; + } else { + return PR_FALSE; /* name too long */ + } + } + rv = GetDriveType(fn) > 1 ? PR_TRUE : PR_FALSE; + /* restore the 'fn' buffer */ + if (slashAdded) { + *--p = '\0'; + } + } + return rv; +} + +#ifndef WINCE +/* + * InitGetFileInfo -- + * + * Called during IO init. Checks for the existence of the system function + * GetFileAttributeEx, which when available is used in GETFILEINFO calls. + * If the routine exists, then the address of the routine is stored in the + * variable getFileAttributesEx, which will be used to call the routine. + */ +static void InitGetFileInfo(void) +{ + HMODULE module; + module = GetModuleHandle("Kernel32.dll"); + if (!module) { + PR_LOG(_pr_io_lm, PR_LOG_DEBUG, + ("InitGetFileInfo: GetModuleHandle() failed: %d", + GetLastError())); + return; + } + + getFileAttributesEx = (GetFileAttributesExFn) + GetProcAddress(module, "GetFileAttributesExA"); +} + +/* + * If GetFileAttributeEx doesn't exist, we call FindFirstFile as a + * fallback. + */ +static BOOL +GetFileAttributesExFB(const char *fn, WIN32_FIND_DATA *findFileData) +{ + HANDLE hFindFile; + + /* + * FindFirstFile() expands wildcard characters. So + * we make sure the pathname contains no wildcard. + */ + if (NULL != _mbspbrk(fn, "?*")) { + SetLastError(ERROR_INVALID_NAME); + return FALSE; + } + + hFindFile = FindFirstFile(fn, findFileData); + if (INVALID_HANDLE_VALUE == hFindFile) { + DWORD len; + char *filePart; + char pathbuf[MAX_PATH + 1]; + + /* + * FindFirstFile() does not work correctly on root directories. + * It also doesn't work correctly on a pathname that ends in a + * slash. So we first check to see if the pathname specifies a + * root directory. If not, and if the pathname ends in a slash, + * we remove the final slash and try again. + */ + + /* + * If the pathname does not contain ., \, and /, it cannot be + * a root directory or a pathname that ends in a slash. + */ + if (NULL == _mbspbrk(fn, ".\\/")) { + return FALSE; + } + len = GetFullPathName(fn, sizeof(pathbuf), pathbuf, + &filePart); + if (0 == len) { + return FALSE; + } + if (len > sizeof(pathbuf)) { + SetLastError(ERROR_FILENAME_EXCED_RANGE); + return FALSE; + } + if (IsRootDirectory(pathbuf, sizeof(pathbuf))) { + findFileData->dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; + /* The file size doesn't have a meaning for directories. */ + findFileData->nFileSizeHigh = 0; + findFileData->nFileSizeLow = 0; + /* + * For a directory, these timestamps all specify when the + * directory is created. The creation time doesn't make + * sense for root directories, so we set it to (NSPR) time 0. + */ + memcpy(&findFileData->ftCreationTime, &_pr_filetime_offset, 8); + findFileData->ftLastAccessTime = findFileData->ftCreationTime; + findFileData->ftLastWriteTime = findFileData->ftCreationTime; + return TRUE; + } + if (!IsPrevCharSlash(pathbuf, pathbuf + len)) { + return FALSE; + } else { + pathbuf[len - 1] = '\0'; + hFindFile = FindFirstFile(pathbuf, findFileData); + if (INVALID_HANDLE_VALUE == hFindFile) { + return FALSE; + } + } + } + + FindClose(hFindFile); + return TRUE; +} +#endif + +PRInt32 +_PR_MD_GETFILEINFO64(const char *fn, PRFileInfo64 *info) +{ +#ifdef WINCE + WIN32_FILE_ATTRIBUTE_DATA findFileData; +#else + WIN32_FIND_DATA findFileData; +#endif + BOOL rv; + + if (NULL == fn || '\0' == *fn) { + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + return -1; + } + +#ifdef WINCE + rv = GetFileAttributesExA(fn, GetFileExInfoStandard, &findFileData); +#else + /* GetFileAttributesEx is supported on Win 2K and up. */ + if (getFileAttributesEx) { + rv = getFileAttributesEx(fn, GetFileExInfoStandard, &findFileData); + } else { + rv = GetFileAttributesExFB(fn, &findFileData); + } +#endif + if (!rv) { + _PR_MD_MAP_OPENDIR_ERROR(GetLastError()); + return -1; + } + + if (findFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { + info->type = PR_FILE_DIRECTORY; + } else { + info->type = PR_FILE_FILE; + } + + info->size = findFileData.nFileSizeHigh; + info->size = (info->size << 32) + findFileData.nFileSizeLow; + + _PR_FileTimeToPRTime(&findFileData.ftLastWriteTime, &info->modifyTime); + + if (0 == findFileData.ftCreationTime.dwLowDateTime && + 0 == findFileData.ftCreationTime.dwHighDateTime) { + info->creationTime = info->modifyTime; + } else { + _PR_FileTimeToPRTime(&findFileData.ftCreationTime, + &info->creationTime); + } + + return 0; +} + +PRInt32 +_PR_MD_GETFILEINFO(const char *fn, PRFileInfo *info) +{ + PRFileInfo64 info64; + PRInt32 rv = _PR_MD_GETFILEINFO64(fn, &info64); + if (0 == rv) + { + info->type = info64.type; + info->size = (PRUint32) info64.size; + info->modifyTime = info64.modifyTime; + info->creationTime = info64.creationTime; + } + return rv; +} + +PRInt32 +_PR_MD_GETOPENFILEINFO64(const PRFileDesc *fd, PRFileInfo64 *info) +{ + int rv; + + BY_HANDLE_FILE_INFORMATION hinfo; + + rv = GetFileInformationByHandle((HANDLE)fd->secret->md.osfd, &hinfo); + if (rv == FALSE) { + _PR_MD_MAP_FSTAT_ERROR(GetLastError()); + return -1; + } + + if (hinfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) + info->type = PR_FILE_DIRECTORY; + else + info->type = PR_FILE_FILE; + + info->size = hinfo.nFileSizeHigh; + info->size = (info->size << 32) + hinfo.nFileSizeLow; + + _PR_FileTimeToPRTime(&hinfo.ftLastWriteTime, &(info->modifyTime) ); + _PR_FileTimeToPRTime(&hinfo.ftCreationTime, &(info->creationTime) ); + + return 0; +} + +PRInt32 +_PR_MD_GETOPENFILEINFO(const PRFileDesc *fd, PRFileInfo *info) +{ + PRFileInfo64 info64; + int rv = _PR_MD_GETOPENFILEINFO64(fd, &info64); + if (0 == rv) + { + info->type = info64.type; + info->modifyTime = info64.modifyTime; + info->creationTime = info64.creationTime; + LL_L2I(info->size, info64.size); + } + return rv; +} + +PRStatus +_PR_MD_SET_FD_INHERITABLE(PRFileDesc *fd, PRBool inheritable) +{ +#ifdef WINCE + PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0); + return PR_FAILURE; +#else + BOOL rv; + + /* + * The SetHandleInformation function fails with the + * ERROR_CALL_NOT_IMPLEMENTED error on Win95. + */ + rv = SetHandleInformation( + (HANDLE)fd->secret->md.osfd, + HANDLE_FLAG_INHERIT, + inheritable ? HANDLE_FLAG_INHERIT : 0); + if (0 == rv) { + _PR_MD_MAP_DEFAULT_ERROR(GetLastError()); + return PR_FAILURE; + } + return PR_SUCCESS; +#endif +} + +void +_PR_MD_INIT_FD_INHERITABLE(PRFileDesc *fd, PRBool imported) +{ + if (imported) { + fd->secret->inheritable = _PR_TRI_UNKNOWN; + } else { + fd->secret->inheritable = _PR_TRI_FALSE; + } +} + +void +_PR_MD_QUERY_FD_INHERITABLE(PRFileDesc *fd) +{ +#ifdef WINCE + fd->secret->inheritable = _PR_TRI_FALSE; +#else + DWORD flags; + + PR_ASSERT(_PR_TRI_UNKNOWN == fd->secret->inheritable); + if (GetHandleInformation((HANDLE)fd->secret->md.osfd, &flags)) { + if (flags & HANDLE_FLAG_INHERIT) { + fd->secret->inheritable = _PR_TRI_TRUE; + } else { + fd->secret->inheritable = _PR_TRI_FALSE; + } + } +#endif +} + +PRInt32 +_PR_MD_RENAME(const char *from, const char *to) +{ + /* Does this work with dot-relative pathnames? */ + if (MoveFileA(from, to)) { + return 0; + } else { + _PR_MD_MAP_RENAME_ERROR(GetLastError()); + return -1; + } +} + +PRInt32 +_PR_MD_ACCESS(const char *name, PRAccessHow how) +{ +#ifdef WINCE + PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0); + return -1; +#else +PRInt32 rv; + switch (how) { + case PR_ACCESS_WRITE_OK: + rv = _access(name, 02); + break; + case PR_ACCESS_READ_OK: + rv = _access(name, 04); + break; + case PR_ACCESS_EXISTS: + return _access(name, 00); + break; + default: + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + return -1; + } + if (rv < 0) + _PR_MD_MAP_ACCESS_ERROR(errno); + return rv; +#endif +} + +PRInt32 +_PR_MD_MKDIR(const char *name, PRIntn mode) +{ + /* XXXMB - how to translate the "mode"??? */ + if (CreateDirectoryA(name, NULL)) { + return 0; + } else { + _PR_MD_MAP_MKDIR_ERROR(GetLastError()); + return -1; + } +} + +PRInt32 +_PR_MD_MAKE_DIR(const char *name, PRIntn mode) +{ + BOOL rv; + SECURITY_ATTRIBUTES sa; + LPSECURITY_ATTRIBUTES lpSA = NULL; + PSECURITY_DESCRIPTOR pSD = NULL; + PACL pACL = NULL; + + if (_PR_NT_MakeSecurityDescriptorACL(mode, dirAccessTable, + &pSD, &pACL) == PR_SUCCESS) { + sa.nLength = sizeof(sa); + sa.lpSecurityDescriptor = pSD; + sa.bInheritHandle = FALSE; + lpSA = &sa; + } + rv = CreateDirectoryA(name, lpSA); + if (lpSA != NULL) { + _PR_NT_FreeSecurityDescriptorACL(pSD, pACL); + } + if (rv) { + return 0; + } else { + _PR_MD_MAP_MKDIR_ERROR(GetLastError()); + return -1; + } +} + +PRInt32 +_PR_MD_RMDIR(const char *name) +{ + if (RemoveDirectoryA(name)) { + return 0; + } else { + _PR_MD_MAP_RMDIR_ERROR(GetLastError()); + return -1; + } +} + +PRStatus +_PR_MD_LOCKFILE(PROsfd f) +{ + PRStatus rc = PR_SUCCESS; + DWORD rv; + + rv = LockFile( (HANDLE)f, + 0l, 0l, + 0x0l, 0xffffffffl ); + if ( rv == 0 ) { + DWORD rc = GetLastError(); + PR_LOG( _pr_io_lm, PR_LOG_ERROR, + ("_PR_MD_LOCKFILE() failed. Error: %d", rc )); + rc = PR_FAILURE; + } + + return rc; +} /* end _PR_MD_LOCKFILE() */ + +PRStatus +_PR_MD_TLOCKFILE(PROsfd f) +{ + PR_SetError( PR_NOT_IMPLEMENTED_ERROR, 0 ); + return PR_FAILURE; +} /* end _PR_MD_TLOCKFILE() */ + + +PRStatus +_PR_MD_UNLOCKFILE(PROsfd f) +{ + PRInt32 rv; + + rv = UnlockFile( (HANDLE) f, + 0l, 0l, + 0x0l, 0xffffffffl ); + + if ( rv ) + { + return PR_SUCCESS; + } + else + { + _PR_MD_MAP_DEFAULT_ERROR(GetLastError()); + return PR_FAILURE; + } +} /* end _PR_MD_UNLOCKFILE() */ + +PRInt32 +_PR_MD_PIPEAVAILABLE(PRFileDesc *fd) +{ + if (NULL == fd) + PR_SetError(PR_BAD_DESCRIPTOR_ERROR, 0); + else + PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0); + return -1; +} + +#ifdef MOZ_UNICODE + +typedef HANDLE (WINAPI *CreateFileWFn) (LPCWSTR, DWORD, DWORD, LPSECURITY_ATTRIBUTES, DWORD, DWORD, HANDLE); +static CreateFileWFn createFileW = CreateFileW; +typedef HANDLE (WINAPI *FindFirstFileWFn) (LPCWSTR, LPWIN32_FIND_DATAW); +static FindFirstFileWFn findFirstFileW = FindFirstFileW; +typedef BOOL (WINAPI *FindNextFileWFn) (HANDLE, LPWIN32_FIND_DATAW); +static FindNextFileWFn findNextFileW = FindNextFileW; +typedef DWORD (WINAPI *GetFullPathNameWFn) (LPCWSTR, DWORD, LPWSTR, LPWSTR *); +static GetFullPathNameWFn getFullPathNameW = GetFullPathNameW; +typedef UINT (WINAPI *GetDriveTypeWFn) (LPCWSTR); +static GetDriveTypeWFn getDriveTypeW = GetDriveTypeW; + +#endif /* MOZ_UNICODE */ + +PRBool _pr_useUnicode = PR_FALSE; + +static void InitUnicodeSupport(void) +{ +#ifdef WINCE + /* The A functions don't even exist in Windows Mobile. */ + _pr_useUnicode = PR_TRUE; +#else + /* + * The W functions exist on Win9x as stubs that fail with the + * ERROR_CALL_NOT_IMPLEMENTED error. We plan to emulate the + * MSLU W functions on Win9x in the future. + */ + + /* Find out if we are running on a Unicode enabled version of Windows */ + OSVERSIONINFOA osvi = {0}; + + osvi.dwOSVersionInfoSize = sizeof(osvi); + if (GetVersionExA(&osvi)) { + _pr_useUnicode = (osvi.dwPlatformId >= VER_PLATFORM_WIN32_NT); + } else { + _pr_useUnicode = PR_FALSE; + } +#ifdef DEBUG + /* + * In debug builds, allow explicit use of ANSI methods to simulate + * a Win9x environment for testing purposes. + */ + if (getenv("WINAPI_USE_ANSI")) + _pr_useUnicode = PR_FALSE; +#endif +#endif +} + +#ifdef MOZ_UNICODE + +/* ================ UTF16 Interfaces ================================ */ +static void FlipSlashesW(PRUnichar *cp, size_t len) +{ + while (len-- > 0) { + if (cp[0] == L'/') { + cp[0] = L'\\'; + } + cp++; + } +} /* end FlipSlashesW() */ + +PROsfd +_PR_MD_OPEN_FILE_UTF16(const PRUnichar *name, PRIntn osflags, int mode) +{ + HANDLE file; + PRInt32 access = 0; + PRInt32 flags = 0; + PRInt32 flag6 = 0; + SECURITY_ATTRIBUTES sa; + LPSECURITY_ATTRIBUTES lpSA = NULL; + PSECURITY_DESCRIPTOR pSD = NULL; + PACL pACL = NULL; + + if (osflags & PR_CREATE_FILE) { + if (_PR_NT_MakeSecurityDescriptorACL(mode, fileAccessTable, + &pSD, &pACL) == PR_SUCCESS) { + sa.nLength = sizeof(sa); + sa.lpSecurityDescriptor = pSD; + sa.bInheritHandle = FALSE; + lpSA = &sa; + } + } + + if (osflags & PR_SYNC) flag6 = FILE_FLAG_WRITE_THROUGH; + + if (osflags & PR_RDONLY || osflags & PR_RDWR) + access |= GENERIC_READ; + if (osflags & PR_WRONLY || osflags & PR_RDWR) + access |= GENERIC_WRITE; + + if ( osflags & PR_CREATE_FILE && osflags & PR_EXCL ) + flags = CREATE_NEW; + else if (osflags & PR_CREATE_FILE) { + if (osflags & PR_TRUNCATE) + flags = CREATE_ALWAYS; + else + flags = OPEN_ALWAYS; + } else { + if (osflags & PR_TRUNCATE) + flags = TRUNCATE_EXISTING; + else + flags = OPEN_EXISTING; + } + + file = createFileW(name, + access, + FILE_SHARE_READ|FILE_SHARE_WRITE, + lpSA, + flags, + flag6, + NULL); + if (lpSA != NULL) { + _PR_NT_FreeSecurityDescriptorACL(pSD, pACL); + } + if (file == INVALID_HANDLE_VALUE) { + _PR_MD_MAP_OPEN_ERROR(GetLastError()); + return -1; + } + + return (PROsfd)file; +} + +PRStatus +_PR_MD_OPEN_DIR_UTF16(_MDDirUTF16 *d, const PRUnichar *name) +{ + PRUnichar filename[ MAX_PATH ]; + int len; + + len = wcslen(name); + /* Need 5 bytes for \*.* and the trailing null byte. */ + if (len + 5 > MAX_PATH) { + PR_SetError(PR_NAME_TOO_LONG_ERROR, 0); + return PR_FAILURE; + } + wcscpy(filename, name); + + /* + * If 'name' ends in a slash or backslash, do not append + * another backslash. + */ + if (filename[len - 1] == L'/' || filename[len - 1] == L'\\') { + len--; + } + wcscpy(&filename[len], L"\\*.*"); + FlipSlashesW( filename, wcslen(filename) ); + + d->d_hdl = findFirstFileW( filename, &(d->d_entry) ); + if ( d->d_hdl == INVALID_HANDLE_VALUE ) { + _PR_MD_MAP_OPENDIR_ERROR(GetLastError()); + return PR_FAILURE; + } + d->firstEntry = PR_TRUE; + d->magic = _MD_MAGIC_DIR; + return PR_SUCCESS; +} + +PRUnichar * +_PR_MD_READ_DIR_UTF16(_MDDirUTF16 *d, PRIntn flags) +{ + PRInt32 err; + BOOL rv; + PRUnichar *fileName; + + if ( d ) { + while (1) { + if (d->firstEntry) { + d->firstEntry = PR_FALSE; + rv = 1; + } else { + rv = findNextFileW(d->d_hdl, &(d->d_entry)); + } + if (rv == 0) { + break; + } + fileName = GetFileFromDIR(d); + if ( (flags & PR_SKIP_DOT) && + (fileName[0] == L'.') && (fileName[1] == L'\0')) + continue; + if ( (flags & PR_SKIP_DOT_DOT) && + (fileName[0] == L'.') && (fileName[1] == L'.') && + (fileName[2] == L'\0')) + continue; + if ( (flags & PR_SKIP_HIDDEN) && FileIsHidden(d)) + continue; + return fileName; + } + err = GetLastError(); + PR_ASSERT(NO_ERROR != err); + _PR_MD_MAP_READDIR_ERROR(err); + return NULL; + } + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + return NULL; +} + +PRInt32 +_PR_MD_CLOSE_DIR_UTF16(_MDDirUTF16 *d) +{ + if ( d ) { + if (FindClose(d->d_hdl)) { + d->magic = (PRUint32)-1; + return 0; + } else { + _PR_MD_MAP_CLOSEDIR_ERROR(GetLastError()); + return -1; + } + } + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + return -1; +} + +#define _PR_IS_W_SLASH(ch) ((ch) == L'/' || (ch) == L'\\') + +/* + * IsRootDirectoryW -- + * + * Return PR_TRUE if the pathname 'fn' is a valid root directory, + * else return PR_FALSE. The PRUnichar buffer pointed to by 'fn' must + * be writable. During the execution of this function, the contents + * of the buffer pointed to by 'fn' may be modified, but on return + * the original contents will be restored. 'buflen' is the size of + * the buffer pointed to by 'fn', in PRUnichars. + * + * Root directories come in three formats: + * 1. / or \, meaning the root directory of the current drive. + * 2. C:/ or C:\, where C is a drive letter. + * 3. \\<server name>\<share point name>\ or + * \\<server name>\<share point name>, meaning the root directory + * of a UNC (Universal Naming Convention) name. + */ + +static PRBool +IsRootDirectoryW(PRUnichar *fn, size_t buflen) +{ + PRUnichar *p; + PRBool slashAdded = PR_FALSE; + PRBool rv = PR_FALSE; + + if (_PR_IS_W_SLASH(fn[0]) && fn[1] == L'\0') { + return PR_TRUE; + } + + if (iswalpha(fn[0]) && fn[1] == L':' && _PR_IS_W_SLASH(fn[2]) + && fn[3] == L'\0') { + rv = getDriveTypeW(fn) > 1 ? PR_TRUE : PR_FALSE; + return rv; + } + + /* The UNC root directory */ + + if (_PR_IS_W_SLASH(fn[0]) && _PR_IS_W_SLASH(fn[1])) { + /* The 'server' part should have at least one character. */ + p = &fn[2]; + if (*p == L'\0' || _PR_IS_W_SLASH(*p)) { + return PR_FALSE; + } + + /* look for the next slash */ + do { + p++; + } while (*p != L'\0' && !_PR_IS_W_SLASH(*p)); + if (*p == L'\0') { + return PR_FALSE; + } + + /* The 'share' part should have at least one character. */ + p++; + if (*p == L'\0' || _PR_IS_W_SLASH(*p)) { + return PR_FALSE; + } + + /* look for the final slash */ + do { + p++; + } while (*p != L'\0' && !_PR_IS_W_SLASH(*p)); + if (_PR_IS_W_SLASH(*p) && p[1] != L'\0') { + return PR_FALSE; + } + if (*p == L'\0') { + /* + * GetDriveType() doesn't work correctly if the + * path is of the form \\server\share, so we add + * a final slash temporarily. + */ + if ((p + 1) < (fn + buflen)) { + *p++ = L'\\'; + *p = L'\0'; + slashAdded = PR_TRUE; + } else { + return PR_FALSE; /* name too long */ + } + } + rv = getDriveTypeW(fn) > 1 ? PR_TRUE : PR_FALSE; + /* restore the 'fn' buffer */ + if (slashAdded) { + *--p = L'\0'; + } + } + return rv; +} + +PRInt32 +_PR_MD_GETFILEINFO64_UTF16(const PRUnichar *fn, PRFileInfo64 *info) +{ + HANDLE hFindFile; + WIN32_FIND_DATAW findFileData; + PRUnichar pathbuf[MAX_PATH + 1]; + + if (NULL == fn || L'\0' == *fn) { + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + return -1; + } + + /* + * FindFirstFile() expands wildcard characters. So + * we make sure the pathname contains no wildcard. + */ + if (NULL != wcspbrk(fn, L"?*")) { + PR_SetError(PR_FILE_NOT_FOUND_ERROR, 0); + return -1; + } + + hFindFile = findFirstFileW(fn, &findFileData); + if (INVALID_HANDLE_VALUE == hFindFile) { + DWORD len; + PRUnichar *filePart; + + /* + * FindFirstFile() does not work correctly on root directories. + * It also doesn't work correctly on a pathname that ends in a + * slash. So we first check to see if the pathname specifies a + * root directory. If not, and if the pathname ends in a slash, + * we remove the final slash and try again. + */ + + /* + * If the pathname does not contain ., \, and /, it cannot be + * a root directory or a pathname that ends in a slash. + */ + if (NULL == wcspbrk(fn, L".\\/")) { + _PR_MD_MAP_OPENDIR_ERROR(GetLastError()); + return -1; + } + len = getFullPathNameW(fn, sizeof(pathbuf)/sizeof(pathbuf[0]), pathbuf, + &filePart); + if (0 == len) { + _PR_MD_MAP_OPENDIR_ERROR(GetLastError()); + return -1; + } + if (len > sizeof(pathbuf)/sizeof(pathbuf[0])) { + PR_SetError(PR_NAME_TOO_LONG_ERROR, 0); + return -1; + } + if (IsRootDirectoryW(pathbuf, sizeof(pathbuf)/sizeof(pathbuf[0]))) { + info->type = PR_FILE_DIRECTORY; + info->size = 0; + /* + * These timestamps don't make sense for root directories. + */ + info->modifyTime = 0; + info->creationTime = 0; + return 0; + } + if (!_PR_IS_W_SLASH(pathbuf[len - 1])) { + _PR_MD_MAP_OPENDIR_ERROR(GetLastError()); + return -1; + } else { + pathbuf[len - 1] = L'\0'; + hFindFile = findFirstFileW(pathbuf, &findFileData); + if (INVALID_HANDLE_VALUE == hFindFile) { + _PR_MD_MAP_OPENDIR_ERROR(GetLastError()); + return -1; + } + } + } + + FindClose(hFindFile); + + if (findFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { + info->type = PR_FILE_DIRECTORY; + } else { + info->type = PR_FILE_FILE; + } + + info->size = findFileData.nFileSizeHigh; + info->size = (info->size << 32) + findFileData.nFileSizeLow; + + _PR_FileTimeToPRTime(&findFileData.ftLastWriteTime, &info->modifyTime); + + if (0 == findFileData.ftCreationTime.dwLowDateTime && + 0 == findFileData.ftCreationTime.dwHighDateTime) { + info->creationTime = info->modifyTime; + } else { + _PR_FileTimeToPRTime(&findFileData.ftCreationTime, + &info->creationTime); + } + + return 0; +} +/* ================ end of UTF16 Interfaces ================================ */ +#endif /* MOZ_UNICODE */ |